Amazfit Helio Strap: Enable HRV

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huami/zeppos/straps/AmazfitHelioStrapCoordinator.java

@@ -59,6 +59,11 @@ public class AmazfitHelioStrapCoordinator extends ZeppOsCoordinator {
         return false;
     }
 
+    @Override
+    public boolean supportsHrvMeasurement(final GBDevice device) {
+        return true;
+    }
+
     @Override
     public int getWorldClocksSlotCount() {
         return 0;